Finding the Third Proportional to 425,680.50 and 634,830

Step by Step Solution

1. Step 1: Write the proportion equation
   425,680.50 : 634,830 = 634,830 : x
2. Step 2: Convert to fraction form
   425,680.50/634,830 = 634,830/x
3. Step 3: Cross multiply
   425,680.50x = 634,830 × 634,830
4. Step 4: Simplify right side
   425,680.50x = 403,009,128,900
5. Step 5: Solve for x
   x = 403,009,128,900/425,680.50
6. Step 6: Final answer
   x = 946,740.87